Zalman heatsinks are one of the rare breed which really challenge the notion of what a heatsink is supposed to be. It is unlike practically every other heatsink we've ever seen, and employs a cooling system which is equally different. In fact, the CNPS2005 is technically a "Flower Heatsink" (FHS).

What makes this a Flower-type heatsink is how the CNPS2005 is
constructed. Where typical extruded heatsinks are one-piece affairs, this
heatsink is made up of about 50 individual aluminum patterned fins. Two aluminum
blocks hold everything together with couple of stainless steel bolts. The base
of this heatsink is milled absolutely flat, and is very smooth.

Comes in a box with the following: 80mm fan, heatsink clip, syringe of thermal compound, (6) screws for attaching the fan to the case, the "silent mode" adapter cable and Instructions.

More than just a heatsink: Noise Reduction System

Noise can be a big problem for anyone who
works in an sound studio, leaves their computer running 24x7, or run DVD's off of it
in an entertainment room. In situations like those, the quieter the computer, the better. If quite is what you're
looking for, then have a look at the all aluminum CNPS2005.

The "CNPS" in CNPS2005 is an acronym for Zalman's
philosophy of a "Computer Noise Prevention System". They actually offer low
noise power supplies and hard drives in addition to the range of
heatsinks. The goal they state is to cut traditional computer system
noise from 30dB or higher, to 20dB or lower.

The FHS heatsink uses a patent-pending design and
works the way it does by having a short path for heat to travel. The surface area
is upwards of 3 to 10 times larger than traditional coolers at .28m2.
Lets take a look at this unique flower heatsink with
a closer perspective!